gpio: remove all usage of gpio_remove retval in driver/gpio

Signed-off-by: abdoulaye berthe <berthe.ab@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-twl6040.c b/drivers/gpio/gpio-twl6040.c
index 0caf5cd..f28e04b 100644
--- a/drivers/gpio/gpio-twl6040.c
+++ b/drivers/gpio/gpio-twl6040.c
@@ -111,7 +111,8 @@
 
 static int gpo_twl6040_remove(struct platform_device *pdev)
 {
-	return gpiochip_remove(&twl6040gpo_chip);
+	gpiochip_remove(&twl6040gpo_chip);
+	return 0;
 }
 
 /* Note:  this hardware lives inside an I2C-based multi-function device. */